NRC vs STC Rating: What’s the Difference in Acoustic Panels?
Summary: NRC measures sound absorption inside a room on a 0 to 1.0 scale, while STC measures sound blocking between rooms, typically rated between 25 and 60 or higher. Use NRC-rated acoustic panels to control echo and improve speech clarity, and use STC-rated partitions, doors, and windows to stop noise from travelling between spaces. Most…










